ofUrlFileLoader progress function #1723

Job	Run time
build-ios-tvos (ios, macos)	3m 40s
build-macos (osx, makefiles)	5m 20s
build-msys2 (mingw64)	12m 0s
build-ios-tvos (tvos, macos)	6m 1s
build-linux64 (linux64, 64gcc6)	10m 5s
build-android (android, arm64-v8a)	6m 52s
rpi-build (aarch64, arm64, aarch64-linux-gnu, 1)	5m 55s
rpi-build (armv6l, armhf, arm-linux-gnueabihf, 1)	5m 25s
build-macos (osx, xcode)	2m 50s
build-android (android, x86_64)	6m 59s
build-android (android, armeabi-v7a)	6m 42s
build-emscripten (emscripten)	3m 28s
build-msys2 (clang64)	9m 9s
build-vs2022 (x64)	12m 49s
build-vs2022 (ARM64)	13m 51s
build-msys2 (ucrt64)	11m 51s
build-vs2022 (ARM64EC)	13m 30s
	2h 16m 27s

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